Hi all,

Besides a good driver and sticky tires, what mods would be needed to get a mini doing high 13s-14 flat 1/4 mile runs?

Would a chip, pulley, intake, header, exhaust be able to pull it off?
----------------------------------------------------------------


Impreza GC8 JDM STI VI conversion
05 MCS
Drop by my page @ http://www.myspace.com/jkjersey

 

From what I have gathered looks like a head and cam help. What mods do you have so far?

I am considering a lightweight flywheel, then head and cam. I already have the pulley, CAI cat back exhauset.

If you do the head I think you may want to get a header too. MAybe some ECU programming.

 

A 426 Hemi will do it

 

with a hemi in a mini I hope it better be in the 11s or 10s. Geez it would probably break a motor mount on a launch hehe

So cmon what mods have people done to pull similar times at the strip with a MCS>?
----------------------------------------------------------------


Impreza GC8 JDM STI VI conversion
05 MCS
Drop by my page @ http://www.myspace.com/jkjersey

 

I'm agreeing with the head and cam to get 14 or lower. But don't forget weight reduction: My car is 2500lbs dry and you could easily shave 100lbs off that with seat deletes and a racing seat for the driver, smaller battery. I already have light wheels and tires, but smaller wheels save even more. I think the standard engine mods (CAI, IC mods, software, header+cat-back) get you high 14s and maybe mid 14s if you're lucky.
good luck!

 

Its all in here http://www.ross-tech.net/andy/mini/d...artermile.html Just look see what they did

 

How about putting a second engine/drive train in the back seat to drive the rear wheels?

 

I'm gonna go ahead and say that although all of the mods mentioned will help you reach your 14.0 goal, they are not necessary. My personal best is a 14.2, my best MPH is 98.3. That MPH is comparable to many cars I see running upper 13's.

My car has only a magnaflow cat-back, alta CAI, and 15% supercharger pulley, my runs were made on 17" s-lites with OEM runflat performance tires. There is no doubt in my mind that if I could figure out how to launch on my 225/45-15 autocross tires, I'd be in the 13's. With the added traction, reduced rotating mass (15 lbs lighter per corner), and improved gearing from the smaller overall diameter, I think I'm there. A few big NON-mods that will help quite a bit are:

Cold ambient air- this is out of your control, but the colder outside air really seemed to make my car happy (my quick runs were made in the low 40's F.)

ICE down your intercooler between runs- I have freezer bags full of ice that I place ontop of my stock intercooler, when the I.C. is cold to touch thats when I'm ready to run.

RACE FUEL: With the stock ECU tune and a 15% pullley- the knock sensor IS retarding the timing, run your tank down to just about empty and add just a few gallons of 100 octane UNLEADED race fuel (minimize weight, only have as much gas in the tank as you need).

I think that 14.0's are very possible with minimal mods and enough driving practice.

Yes, any sort of weight loss is going to help, my car (without my extra 190 lbs) tipped the scales at 2650 when I checked it at the end of the track.


Jason

 

2840lbs and 98.4mph = 222.39 flywheel hp congrats on a nice combo, out of intreast what was you 60ft and 1/8 mile et and mph.

Those 15 inch wheels will defintley help you to get nearer the 13's

Have you had the ecu flashed at all?

 

My wish is 14.0 no nitrous; 12.9 with 50 shot.

Assuming a great launch and driver, I think it's quite possible to run a 13.9x on a good track, 40 degree ambient temp, sticky tires, lightweight wheels, low gas, and rear seat delete with I/H/E, ignition upgrade, and a 19% pulley.

Of course an aftermarket ECU and larger injectors would also help, but not necessary, IMO.

I also don't think a 19% gives a significant amount of more top end than a 15%, but it does give you boost a tad bit sooner on your powerband, which could be the deciding factor between a 13.9x run and a 14.0.

 

It is really interesting to look at that list. The times are all over the place for those cars with mods between the 14 and 15 second cars. Most of those cars seem to be running essentially the same mods. I realize that some of this is driver related, but is some of it due to the small redesign?

 

With your gearbox you're going to struggle, On slicks with dropping the clutch at 5500 it pulls the motor down to 1400 shift at 6600 it goes over the line at 6600 in 3rd at 94 without nitrous, so with just a little more hp you'll have to change into 4th and that will kill the et and mph, thats why I defintley wouldn't go for a 19% because I think it will hurt more than help it, but unless you try you wont know.

With 100hp it goes over the line at 6800 at 114 in 4th

 

What are you referring to "small design" ?

 

In 2005, I believe, the car went through a small re design. Produced a bit more power, small exterior changes, and etc. I thought i had seen dynos that make the engine definately seem to be underrated. IE producing the power at the wheels that was claimed at the crank.

 

I wish that was the case, but it's definitely not.

 

They do have the new tranny though in '05, which can only help things

 

60' was 2.167
1/8 9.207@78.70

ECU is still bone stock, I haven't touched it.


Jason

 

That's a stout 60ft I can run regular 2.0s on the drag radials which are the 205 50 15s with the smaller height that would get you a high 13 at 100ish

 

Nice posts. Thanks for the insight so far everyone. I was reading Alaskablue's post. I never seen the dynos from the stock 05s but from the couple minis we drove when we were shopping we definitely noticed a difference between the 05+ minis and previous years. A noticeable difference actually. We ended up buying one of the 05s on the spot after the test drive. I am very curious what the base dyno curve is going to look like when I can get this car to a shop to be tuned.

So it looks like with just an exhaust, intake and pulley it is possible to pull 14s. I suppose a Quaife or Phantom Grip LSD could help with better times too.

The path I think we may look into is a 19 percent pulley, GIAC chip, CAI, and injectors, and OBX headers. Should come in around $1500 mark and it looks like the gains should definitely put it in the high 13s even with the ASA AR1s 18s w summer tires we are looking into.

The exhaust I think we may do last. I was looking at price/performance ratio at the mods one can do on the mini and it looked like headers made more of an improvement than the exhaust. Some of the exhaust before and after gains were minimal and much less than what the manufacturers stated. Did I make a mistake in coming to this conclusion?
----------------------------------------------------------------


Impreza GC8 JDM STI VI conversion
05 MCS
Drop by my page @ http://www.myspace.com/jkjersey

 

The best of luck on a 13.xx 1/4, but I think the circumstance is highly unlikely with those mods, especially with lack of a better flowing exhaust, 18" wheels, and winter tires.

Maybe if you go to a downhill track with a 30mph wind at your back, and get a perfect launch, its possible.

Check out the unofficial 1/4 mile time database, if you haven't already: it's quite depressing.
However it is slowly getting better...
http://www.ross-tech.net/andy/mini/d...artermile.html

 

i have a 19% pulley, cai, catback, inter cooler, well look at my sig. i got 14.2, my best et was 99.7, but then i didnt get 14.2. n that night i fried my clutch, i think with a racing clutch n lighter flywheel n obx header, i will get high 13's!

 

Exactly.. buy the right car for the job..

 

I do remember that when Motoring Undergorund did the Intake Shoot out, they dynoed a bone stock 05 or 06 at 172hp to the wheels! So that would be significantly underrated from the supposed 168 bhp. Pre 05s claimed 163 bhp but I'm not sure what they actually dynoed at. Also I heard that the post 05s with the new tranny, only suffered a 12% drivetrain loss.

 

14 flat @ 97 mph..... I would say, any mod that can give you 220 bhp or ~195 whp with very good tires and light wheels will do.
Just my 2 cents.

 

Just my 2 cents worth. I see/read a few people talking about wheel size etc. Really need to talk tire size. My 18'' rims with 215-35-18 tires are virtually the same diameter as my stock 15'' rims and tire size.. So smaller rim might be less weight, but you have to pay attention to total diameter of tire regardless of rim size. It's not like back in the day where everything was 15'' rims and then you could go 50, 60, 70 series tire for height, and total diameter..